Automatic damper for chimney-flues.



J. GORRIEN. AUTOMATIC DAMPER FOR CHIMNEY FLUES.

APPLICATION FILED 0GT.31, 1913.

Patented June 16, 1914.

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m v fl/ MW 1 y w 5 y M F 1 \b 1 J. GORRIEN. AUTOMATIC DAMPER FOR CHIMNEY FLUES.

APPLICATION FILED 00131, 1913.

Patented June 16, 1914.

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COLUMBIA PLANoaRAPl-l 20.. WASHINGTON, D. c.

JOHN GORR-IEN, OF MINNEAPOLIS, MINNESOTA.

AUTOMATIC DAMPER FOR CHIMNEY-FLUES.

Specification of Letters Patent.

Patented June 16, 1914.

Application filed October 31, 1913. Serial No. 798,436.

To all whom it may concern Be it known that I, JOHN GORRIEN, citizen of the United States, resident of Minneapolis, county of I-Iennepin, State of Minnesota, have invented certain new and useful Improvements in Automatic Dampers for Chimney-Flues, of which the following is a specification.

The object of my invention is to provide a means operated by the wind pressure for checking the draft in the flue proportionately to the pressure of the wind, thereby economizing in the consumption of fuel.

A further object is to simplify and improve the device for the same purpose shown and described in my application for Letters Patent of the United States, filed April 21, 1913, Serial No. 762,605.

My invention consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings forming part of this specification, Figure 1 is a perspective View of the top of a chimney with my invention applied thereto, Fig. 2 is a vertical sectional View of the same, Fig. 3 is a vertical sectional View taken on a line at right angles substantially to the section line of Fig. 2.

In the drawing, 2 represents a chimney or stack, 4: and 5 represent bars arranged in pairs, preferably in the form of a rectangular frame, with their end portions secured together by suitable means, such as rivets 6. This frame is adapted to rest on the top of the chimney, the ends of the bars being seated on the top course of brick. Depending from the bars 4 are fingers 7, preferably curved and of spring material, and adapted to bear on the inner surface of the flue and hold the frame in place thereon. These fingers are capable of being bent to adapt the frame to fit flues of different sizes. The bars 5 are provided with centrally arranged hangers 8 and preferably with reinforcing plates 9, which may be triangular in form, as shown, and secured by suitable means to the hangers 8. The lower ends of the hang ers are connected across the frame by a bar 10. A damper 11 is mounted on a rod 12 which has bearings at each end in the lower portions of the hangers 8. On these bearings the damper swings in the flue from a substantially vertical position to a point across the flue, where it will materially check the draft. A weight 18 is preferably provided on said damper and a stop device 14 is mounted on the bar 10 in the path of the damper to limit its tilting movement toward the horizontal. The damper blade is also preferably provided with openings 15 therein which increase the circulation through the flue and allow for the passage of the products of combustion when the damper is closed.

Upon the bars A and 5 I arrange a frame or superstructure consisting preferably of arched straps 16 secured at their ends to the bars 4 and 5 and secured together at their point of intersection by means of a plate 17. This point of intersection of the straps 16 is preferably at one side of the vertical center of the flue. A rod 18 has a ball 19 secured thereon and supported in a bearing or socket 20 formed in the plate 17, said rod projecting above the flue and provided at its upper end with a series of blades 21 which are exposed to the wind pressure blowing from any point of the compass. The rod 18 depends below the plate 17 and is provided with an adjustable balance weight 22 which normally tends to hold the rod in an upright or vertical position. A rod 23 is pivotally connected at 24; with the lower end of the rod and has a swivel connection 25 with a bracket 26 that is secured to the damper 11 at one side of the axis thereof. The rod is free to tilt in its bearing in any direction with the pressure of the wind on the blades and as the rod is swung from its normal upright position its lower end will be lifted and the flue damper will be closed a distance commensurate with the tilting of the rod. In a strong wind, the rod and blades may be tilted to the extremity or limit of their movement, whereupon the damper will be swung to its closed position, while if a lighter wind is blowing, the damper will only be partially closed, but in either case the draft in the flue will be out down proportionately to the draft when the wind is blowing.

In various ways the details of construction herein shown and described may be modified and still be within the scope of my invention.

I claim as my invention 1. The combination, of a flue, a frame seated. thereon, means mounted on said frame and depending within said flue, and engaging the walls thereof and permitting the application of said frame to flues of different sizes, a rod having a universal bearing support intermediate to its ends on said frame, a damper mounted in said flue, means for transmitting motion from said rod to said damper, and a blade carried by said rod and free to oscillate therewith under Wind pressure to close said damper.

2. The combination, with a flue, of a frame mounted thereon, hangers depending from said frame within said flue, a damper having a rod journaled in said hangers, a stop carried by said hangers in the path of said damper and limiting its oscillating movement toward a horizontal position, a

rod having a universal joint support above said damper and normally in a substantial vertical position, said rod projecting above said flue, means for transmitting motion from the lower end of said rod to said damper, and a blade carried by said spindle and actuated by the pressure of the wind to tilt said rod.

In witness whereof, I have hereunto set my hand this 24th day of October, 1913.

JOHN GORRIEN.

VVit-nesses:

EDWARD A. PAUL, GENEVIEVE E. SonENsEN.

Copies of this patent may be obtained for five cents each,

by addressing the Commissioner of Patents,

Washington, D. C. 

